CN113977124A - Welding method for internal structure of external combustion kiln - Google Patents
Welding method for internal structure of external combustion kiln Download PDFInfo
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- CN113977124A CN113977124A CN202111245058.9A CN202111245058A CN113977124A CN 113977124 A CN113977124 A CN 113977124A CN 202111245058 A CN202111245058 A CN 202111245058A CN 113977124 A CN113977124 A CN 113977124A
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- fixing frame
- ring
- reinforcing ribs
- kiln body
- kiln
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
Abstract
The invention relates to a welding method of an internal structure of an external combustion kiln, which relates to the field of welding and is used for welding a plurality of reinforcing ribs at intervals in a ring shape in a columnar kiln body, wherein the length direction of the reinforcing ribs is the same as that of the kiln body, and the cross sections of the reinforcing ribs are L-shaped, rectangular, I-shaped, triangular or T-shaped.
Description
Technical Field
The invention relates to the technical field of rotary kilns, in particular to a welding method for an internal structure of an external combustion kiln.
Background
The rotary kiln is a rotary calcining kiln, commonly called a rotary kiln, and is a thermal equipment for completing high-temperature heat treatment of raw materials in a rotary cylinder. Raw materials are arranged in the obliquely arranged cylinder, under the action of gravity and the drive of the rotary cylinder, the raw materials roll and advance from a high end (kiln tail) to a low end (kiln head), fuel is fed into the cylinder from the low end to be combusted, generated flue gas flows to the high end, the flue gas and the raw materials move in opposite directions, and heat exchange is carried out between the flue gas and the raw materials in the flowing process of the high-temperature flue gas, so that the raw materials are calcined. The external combustion type rotary kiln is characterized in that a kiln is sleeved outside the rotary kiln, and a burner is additionally arranged in the kiln to heat the outer wall of the rotary kiln. Because the external combustion type rotary kiln can be provided with a plurality of burners at intervals along the length direction of the rotary kiln, each part of the rotary kiln can be heated uniformly, and the raw material calcining degree is very high.
However, the general external combustion kiln has a low requirement on the calcination efficiency, so that the length of the external combustion kiln is short, the flowing distance of raw materials is short, the calcination efficiency is also reduced, the situation of insufficient calcination often occurs, and if the external combustion kiln is lengthened, the problem of twist is easily caused because the external combustion kiln is too long and needs to rotate under the action of high temperature, so that the whole external combustion kiln is scrapped.
Therefore, in view of the above disadvantages, it is desirable to provide a welding method for an internal structure of an external combustion kiln.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem of low structural strength of a lengthened rotary kiln.
(II) technical scheme
In order to solve the above technical problems, the present invention provides a welding method of an internal structure of an external combustion kiln, comprising the steps of,
i, erecting a tail fixing frame on one side of a kiln body, inserting reinforcing ribs on the tail fixing frame according to the original design, and positioning the tail fixing frame at one end of each reinforcing rib;
erecting a head fixing frame at the other end of each reinforcing rib, and enabling the arrangement position of each reinforcing rib to be the same as the original design by abutting the head fixing frame with the reinforcing rib;
placing the kiln body in an installation area in a hoisting mode of a gantry crane, hoisting a head fixing frame and a tail fixing frame with arranged reinforcing ribs to one side of the kiln body by the gantry crane, placing the head fixing frame and the tail fixing frame until a rail wheel at the bottom of the tail fixing frame is abutted to a rail, then pulling the reinforcing ribs into the kiln body by the gantry crane, and abutting the tail fixing frame to a port of the kiln body;
IV, placing a support frame in the middle of the kiln body, wherein the support frame extends into the kiln body from a cavity in the middle of the tail fixing frame, and the support frame extends to enable the reinforcing ribs to be abutted against the inner wall of the kiln body;
and V, welding the reinforcing ribs, dismantling the head fixing frame and the tail fixing frame after welding is finished, and dismantling the supporting frame finally to finish stable welding of the internal structure of the kiln body.
As a further illustration of the invention, the reinforcing ribs may preferably also be a diamond-shaped network.
As a further description of the invention, preferably, the tail fixing frame includes a butting ring and a supporting ring, the butting ring and the supporting ring are both of an annular structure, and the inner diameters of the butting ring and the supporting ring are both smaller than the inner diameter of the kiln body, the outer diameter of the butting ring is larger than the outer diameter of the kiln body, the outer diameter of the supporting ring is smaller than the inner diameter of the kiln body, an annular groove is formed in the outer wall surface of the supporting ring, an annular plaster mold is poured in the annular groove, and the reinforcing rib is embedded in the plaster mold.
As a further explanation of the present invention, preferably, before welding the reinforcing ribs, the tail fixing frame is laid on the ground, a circular ring with the same inner diameter as that of the kiln body is enclosed outside the annular groove through a wood plate, then the reinforcing ribs are placed in a space between the circular ring and the annular groove according to a designed position, the mixed gypsum slurry is poured into the space between the circular ring and the annular groove, and the welding of the reinforcing ribs is started after the gypsum is solidified.
As a further description of the present invention, after the circular ring is formed by the wood plate, a mold having the same cross-sectional shape as the reinforcing rib but a larger outer diameter size is preferably placed in the space, and then the mold is poured with gypsum, and after the gypsum is solidified, the mold is taken out to form a gypsum mold from the solidified gypsum, and finally the reinforcing rib is embedded in the gypsum mold to be welded.
As a further description of the present invention, it is preferable that the head fixing frame is circular, a positioning sleeve is disposed on an outer arc surface of the head fixing frame, the positioning sleeve is made of gypsum, and the reinforcing rib is embedded in the positioning sleeve.
As a further illustration of the invention, it is preferred that the locating sleeve encases a partial reinforcing rib structure.
As a further explanation of the present invention, preferably, the support frame includes a main ring, a threaded rod, a push plate and a limit nut, the main ring is a circular ring with an outer diameter smaller than the inner diameter of the tail fixing frame, the plurality of threaded rods are in a divergent shape and slidably connected to the outer wall of the main ring, the push plate is in a circular arc sheet shape, the outer diameter of the push plate is equal to the inner diameter of the reinforcing rib distribution, the inner end surface of the push plate is fixedly connected with the threaded rod, the limit nut is in threaded connection with the outside of the threaded rod, and the limit nut is abutted against the outer wall surface of the main ring;
through releasing the threaded rod from the main ring, the push plate is abutted to the reinforcing rib, the threaded rod is continuously pushed until the reinforcing rib is abutted to the inner wall surface of the kiln body, and finally the limiting nut is screwed to be abutted to the outer wall surface of the main ring, so that the threaded rod is fixed, and the reinforcing rib can be stably abutted to the inner wall surface of the kiln body.
As a further explanation of the present invention, preferably, after the welding of the reinforcing ribs is completed, the front estimating frame is removed by breaking the positioning sleeve, and then the rear fixing frame is removed by breaking or shattering the gypsum mold by knocking the inner wall surface of the receiving ring.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
according to the invention, the reinforcing ribs with large lengths are accurately, quickly and conveniently welded in the rotary kiln according to the designed positions to improve the structural strength of the rotary kiln, so that the lengthened rotary kiln can still stably run, the material calcination time is ensured to be long, and the reinforcing ribs can play a role in stirring raw materials in the rotating process, so that the raw materials are more fully calcined, and the calcination efficiency is improved.
Drawings
FIG. 1 is a front view of the invention in a welded condition;
FIG. 2 is a rear view of the invention in a welding state;
FIG. 3 is a diagram of a header holder configuration of the present invention;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is a cross-sectional view of the present invention;
FIG. 6 is a structural view of the stand of the present invention;
FIG. 7 is a view showing the structure of a sheet form reinforcing bar of the present invention;
FIG. 8 is a structural view of an I-shaped reinforcing bar of the present invention;
FIG. 9 is a view showing the structure of a V-shaped reinforcing bar of the present invention;
FIG. 10 is a structural view of a T-shaped reinforcing bar of the present invention;
fig. 11 is a structural view of the reinforcing mesh according to the present invention.
In the figure: 1. a kiln body; 11. reinforcing ribs; 2. a tail fixing frame; 21. a butting ring; 22. a bearing ring; 23. a plaster mold; 24. a hoisting ring; 25. a rail wheel; 3. a head part fixing frame; 31. a support bar; 32. a positioning sleeve; 33. hoisting the column; 34. a steel wire; 4. a support frame; 41. a main ring; 42. a threaded rod; 43. pushing the plate; 44. and a limiting nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
An internal structure of an external combustion kiln is combined with figures 3, 7-11, a plurality of reinforcing ribs 11 are welded in a columnar kiln body 1 at intervals in an annular mode, the length direction of each reinforcing rib 11 is the same as that of the kiln body 1, and the cross section of each reinforcing rib 11 is L-shaped, rectangular, I-shaped, triangular or T-shaped. The ribs 11 may also be a diamond-shaped mesh structure. Through setting up the strengthening rib 11 structure of above-mentioned structure, the homoenergetic improves the structural strength who adds the long version kiln body 1, and under the condition of high temperature calcination, the kiln body 1 deformation rate is almost zero. In addition, in the calcining process, the reinforcing ribs 11 can also stir materials, so that the bottom layer materials can be decomposed at high temperature, and the raw materials can be fully reacted by matching with longer calcining time, thereby avoiding waste.
Because the length of the reinforcing ribs 11 is basically the same as that of the kiln body 1 of the lengthened plate, the traditional welding workload is large, and the distribution position of each reinforcing rib 11 is difficult to meet the requirement of uniformity, the invention also provides a welding method of the internal structure of the external combustion kiln, wherein the welding method relates to a welding mould which comprises a tail fixing frame 2, a head fixing frame 3 and a supporting frame 4.
Combine fig. 2, fig. 5, afterbody mount 2 includes butt ring 21 and accepts ring 22, butt ring 21 with accept ring 22 and be the loop configuration and the internal diameter all is less than kiln body 1 internal diameter, if 1 bore of kiln body is great then can use steel butt ring 21 and accept ring 22, butt ring 21 and accept ring 22 that available epoxy made when the bore is less, its cost is low and structural rigidity and intensity are higher, can be used for supporting steel strengthening rib 11, and design into the annular weight that effectively reduces afterbody mount 2, be convenient for hoist and mount the transportation. The external diameter of the abutting ring 21 is larger than the external diameter of the kiln body 1, the external diameter of the abutting ring 22 is smaller than the internal diameter of the kiln body 1, an annular groove is formed in the outer wall surface of the abutting ring 22, an annular plaster mold 23 is poured in the annular groove, the external diameter of the plaster mold 23 is larger than the external diameter of the abutting ring 22, and one end of the reinforcing rib 11 can be embedded in the plaster mold 23. The top of the abutting ring 21 is fixedly connected with a hanging ring 24, so that the hanging of a hook of a gantry crane is facilitated. The bottom of the butt joint ring 21 is rotatably connected with a rail wheel 25, so that the tail fixing frame 2 cannot swing through the matching of a rail and a gantry crane during welding, and the reinforcing ribs 11 can smoothly enter the kiln body 1.
With reference to fig. 3 and 5, the head fixing frame 3 is a steel ring, and the middle of the head fixing frame 3 is fixedly connected with a cross-shaped support rod 31 for supporting the head fixing frame 3 with a larger outer diameter and a thinner wall thickness, so as to improve the structural strength of the head fixing frame 3. The outer arc surface of the head part fixing frame 3 is provided with a positioning sleeve 32, the positioning sleeve 32 is made of gypsum, and the other end of the reinforcing rib 11 is embedded into the positioning sleeve 32. The local reinforcing rib 11 structure of position sleeve 32 cladding wherein can not only cooperate the position of fixed reinforcing rib 11 of afterbody mount 2 through the hardness of gypsum, be convenient for later stage dismantlement separation prelude mount 3 and reinforcing rib 11 again. The middle part of the support rod 31 is fixedly connected with a columnar hoisting column 33, and the hoisting column 33 extends out of the head fixing frame 3, so that a steel rope of the gantry crane is bound on the hoisting column 33 to hoist the head fixing frame 3.
Referring to fig. 5 and 6, the supporting frame 4 includes a main ring 41, a threaded rod 42, a push plate 43 and a stop nut 44, the main ring 41 is a circular ring with an outer diameter smaller than the inner diameter of the tail fixing frame 2, the threaded rods 42 are connected to the outer wall of the main ring 41 in a diverging manner, the push plate 43 is in an arc sheet shape, the outer diameter of the push plate 43 is equal to the distribution inner diameter of the reinforcing rib 11, the inner end surface of the push plate 43 is fixedly connected with the threaded rod 42, the stop nut 44 is connected to the outer wall of the threaded rod 42 in a threaded manner, and the stop nut 44 abuts against the outer wall surface of the main ring 41. Set up support frame 4 and avoid 11 middle parts of strengthening rib to buckle downwards under the action of gravity, the strengthening rib 11 middle part that the guarantee is located the top also can with the 1 butt of the kiln body, subsequent welding installation of being convenient for.
The welding method of the reinforcing ribs 11 comprises the following steps:
i, erecting a tail fixing frame 2 on one side of a kiln body 1, inserting reinforcing ribs 11 on the tail fixing frame 2 according to the original design, and positioning the tail fixing frame 2 at one end of each reinforcing rib 11;
II, erecting a head fixing frame 3 at the other end of each reinforcing rib 11, and enabling the arrangement position of each reinforcing rib 11 to be the same as the original design by abutting the head fixing frame 3 with the reinforcing ribs 11;
placing the kiln body 1 in an installation area in a gantry crane hoisting mode, hoisting a head fixing frame 3 and a tail fixing frame 2 with arranged reinforcing ribs 11 to one side of the kiln body 1 by using a gantry crane, lowering the head fixing frame 3 and the tail fixing frame 2 until a rail wheel 25 at the bottom of the tail fixing frame 2 abuts against a rail, then binding a steel wire on the gantry crane on a hoisting column 33, pushing the tail fixing frame 2 in a matching manner, drawing the reinforcing ribs 11 into the kiln body 1, and enabling the tail fixing frame 2 to abut against a port of the kiln body 1;
IV, a support frame 4 is placed in the middle of the kiln body 1, the support frame 4 extends into the kiln body 1 from a cavity in the middle of the tail fixing frame 2, then a threaded rod 42 is pushed out from a main ring 41 to enable a push plate 43 to be abutted against a reinforcing rib 11, the threaded rod 42 is continuously pushed out until the reinforcing rib 11 is abutted against the inner wall surface of the kiln body 1, finally a limiting nut 44 is screwed to be abutted against the outer wall surface of the main ring 41, the threaded rod 42 is fixed, the reinforcing rib 11 can be stably abutted against the inner wall surface of the kiln body 1, and the reinforcing rib 11 is abutted against the inner wall of the kiln body 1 by means of extension of the support frame 4;
and V, welding the reinforcing ribs 11, dismantling the head fixing frame 3 and the tail fixing frame 2 after welding is finished, and dismantling the support frame 4 finally to finish stable welding of the internal structure of the kiln body 1.
Before welding the reinforcing ribs 11, the tail fixing frame 2 is horizontally placed on the ground, a circular ring with the same inner diameter as that of the kiln body 1 is enclosed outside the annular groove through a wood plate, then the reinforcing ribs 11 are placed in the space between the circular ring and the annular groove according to the designed position, the mixed gypsum slurry is poured into the space between the circular ring and the annular groove, and the reinforcing ribs 11 are welded after the gypsum is solidified. By adopting the method, the tail fixing frame 2 can position and support the reinforcing ribs 11 with different cross-sectional shapes, manual supporting welding is not needed, various molds are not needed to be additionally manufactured to adapt to the reinforcing ribs 1 with different cross sections, and the labor and material cost is greatly reduced.
In addition, in order to further reduce the welding difficulty, after the circular ring is formed by surrounding the wood board, a mold which has the same shape as the cross section of the reinforcing rib 11 but has a slightly larger outer diameter size is placed in the space, then gypsum is used for pouring, the mold is taken out after the gypsum is solidified, the mold leaves a concave mold in the solidified gypsum at the moment, the solidified gypsum forms a gypsum mold 23, and finally the reinforcing rib 11 is embedded into the concave mold in the gypsum mold 23 for welding. By adopting the method, the reinforcing ribs 11 do not need to be hoisted and the positions of the reinforcing ribs 11 also need to be arranged, so that the labor for arranging the reinforcing ribs 11 is saved, and the problems that the arrangement positions are not easy to be accurate or the parallelism of the length directions of the reinforcing ribs 11 cannot be ensured due to the fact that the reinforcing ribs 11 are too long and easy to swing can also be avoided.
The positioning sleeve 32 of the head mount 3 is formed in the same manner as the plaster mold 23, and preferably by casting the mold, removing the mold, and then welding the reinforcing ribs 11. When one end of the reinforcing rib 11 is placed at the position of the positioning sleeve 32, gypsum should be poured into the concave die of the positioning sleeve 32, so that the reinforcing rib 11 can be stably fixed by the positioning sleeve 32. In addition, in order to avoid the loosening of the reinforcing ribs 11, the steel wires 34 need to be bound on the reinforcing ribs 11 on the periphery of the positioning sleeve 32, so that the reinforcing ribs 11 positioned at the bottom of the positioning sleeve 32 are prevented from being separated from the positioning sleeve 32 under the action of gravity in the hoisting process. And in order to further facilitate the welding and the disassembly, the length of the reinforcing rib 11 is larger than that of the kiln body 1, and after the welding is finished, the redundant part can be cut off.
After the reinforcing ribs 11 are welded, the positioning sleeve 32 is broken to take down the head fixing frame 3, the tail fixing frame 2 is taken down after the gypsum mold is shattered or shattered by knocking the inner wall surface of the bearing ring 22, and the broken gypsum can be used for paving or building factories and hospitals, so that waste is avoided. The tail fixing frame 2 and the head fixing frame 3 can be reused, so that the cost is saved.
In conclusion, through the welding mould and the welding method, the workload and the working difficulty of welding workers are greatly reduced, and the number of required workers is changed from 15 workers to 15 workers which are used for welding one kiln body 1 in an alternate matching mode to 4 workers which are used for alternate matching. And the welding time can be shortened from more than one month to nearly half a month, so the method is very practical.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A welding method of an internal structure of an external combustion kiln is characterized in that: the method comprises the following steps that I, a tail fixing frame (2) is erected on one side of a kiln body (1), reinforcing ribs (11) are inserted on the tail fixing frame (2) according to the original design, the sections of the reinforcing ribs (11) are L-shaped, rectangular, I-shaped, triangular or T-shaped, and the length direction of the reinforcing ribs (11) is the same as that of the kiln body (1); the tail fixing frame (2) is positioned at one end of the reinforcing rib (11);
II, erecting a head fixing frame (3) at the other end of the reinforcing rib (11), and enabling the arrangement positions of the reinforcing ribs (11) to be the same as the original design through the abutting joint of the head fixing frame (3) and the reinforcing ribs (11);
placing the kiln body (1) in an installation area in a gantry crane hoisting mode, hoisting a head fixing frame (3) and a tail fixing frame (2) with arranged reinforcing ribs (11) to one side of the kiln body (1) by the gantry crane, lowering the head fixing frame (3) and the tail fixing frame (2) until a rail wheel (25) at the bottom of the tail fixing frame (2) is abutted to a rail, then pulling the reinforcing ribs (11) into the kiln body (1) by the gantry crane, and abutting the tail fixing frame (2) to a port of the kiln body (1);
IV, a support frame (4) is placed in the middle of the kiln body (1), the support frame (4) extends into the kiln body (1) from a cavity in the middle of the tail fixing frame (2), and the support frame (4) extends to enable the reinforcing ribs (1) to be abutted against the inner wall of the kiln body (1);
and V, welding the reinforcing ribs (11), dismantling the head fixing frame (3) and the tail fixing frame (4) after welding is finished, and dismantling the support frame (4) finally to finish stable welding of the internal structure of the kiln body (1).
2. The welding method of an internal structure of an external combustion kiln as defined in claim 3, wherein: the reinforcing ribs (11) can also be of a rhombic net structure.
3. The welding method of an internal structure of an external combustion kiln as defined in claim 1, wherein: afterbody mount (2) are ring structure and internal diameter all are less than kiln body (1) internal diameter including butt ring (21) and accept ring (22), butt ring (21) and accept ring (22) and all are less than kiln body (1) internal diameter, and butt ring (21) external diameter is greater than kiln body (1) external diameter, and it is less than kiln body (1) internal diameter to accept ring (22) external diameter, and the ring channel has been seted up to the outer wall of accept ring (22), pour annular gypsum mold (23) in the ring channel, in strengthening rib (11) embedding gypsum mold (23).
4. The welding method of an internal structure of an external combustion kiln as defined in claim 3, wherein: before welding of the reinforcing ribs (11), the tail fixing frame (2) is horizontally placed on the ground, the outer side of the annular groove is surrounded into a ring with the same inner diameter as that of the kiln body (1) through a wood plate, then the reinforcing ribs (11) are placed in the space between the ring and the annular groove according to the designed position, the mixed gypsum slurry is poured into the ring and the space between the annular grooves, and the reinforcing ribs (11) are welded after the gypsum is solidified.
5. The welding method of an internal structure of an external combustion kiln as defined in claim 4, wherein: after the circular ring is formed by surrounding the wood board, a mold which is the same as the cross section of the reinforcing rib (11) in shape but larger in outer diameter size can be placed in the space, then gypsum is used for pouring, the mold is taken out after the gypsum is solidified, the solidified gypsum forms a gypsum mold (23), and finally the reinforcing rib (11) is embedded into the gypsum mold (23) for welding.
6. The welding method of an internal structure of an external combustion kiln as defined in claim 5, wherein: the head fixing frame (3) is annular, a positioning sleeve (32) is arranged on the outer arc surface of the head fixing frame (3), the positioning sleeve (32) is made of gypsum, and the reinforcing ribs (11) are embedded in the positioning sleeve (32).
7. The welding method of an internal structure of an external combustion kiln according to claim 6, wherein: the positioning sleeve (32) covers the local reinforcing rib (11) structure.
8. The welding method of an internal structure of an external combustion kiln as defined in claim 7, wherein: the supporting frame (4) comprises a main ring (41), threaded rods (42), a push plate (43) and a limiting nut (44), the main ring (41) is a circular ring with the outer diameter smaller than the inner diameter of the tail fixing frame (2), the threaded rods (42) are connected to the outer wall of the main ring (41) in a divergent sliding mode, the push plate (43) is in an arc sheet shape, the outer diameter of the push plate (43) is equal to the distribution inner diameter of the reinforcing ribs (11), the inner end face of the push plate (43) is fixedly connected with the threaded rods (42), the limiting nut (44) is connected to the outer portion of the threaded rods (42) in a threaded mode, and the limiting nut (44) abuts against the outer wall face of the main ring (41);
the threaded rod (42) is pushed out from the main ring (41) to enable the push plate (43) to be abutted against the reinforcing rib (11), the threaded rod (42) is continuously pushed out until the reinforcing rib (11) is abutted against the inner wall surface of the kiln body (1), and finally the limiting nut (44) is screwed to be abutted against the outer wall surface of the main ring (41), so that the threaded rod (42) is fixed, and the reinforcing rib (11) can be stably abutted against the inner wall surface of the kiln body (1).
9. The welding method of an internal structure of an external combustion kiln as defined in claim 8, wherein: after the reinforcing ribs (11) are welded, the positioning sleeve (32) is knocked to break, the head estimation frame (3) can be taken down, and then the gypsum mold (23) is shattered or cracked by knocking the inner wall surface of the bearing ring (22), and the tail fixing frame (2) is taken down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111245058.9A CN113977124A (en) | 2021-10-26 | 2021-10-26 | Welding method for internal structure of external combustion kiln |
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| CN202111245058.9A CN113977124A (en) | 2021-10-26 | 2021-10-26 | Welding method for internal structure of external combustion kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004076032A (en) * | 2002-08-12 | 2004-03-11 | Nippon Steel Corp | Protecting liner for ore receiving hardware in blast furnace |
| CN103801921A (en) * | 2012-11-14 | 2014-05-21 | 五冶集团上海有限公司 | Kiln shell mounting method for vertical shaft kiln |
| CN109317847A (en) * | 2018-10-24 | 2019-02-12 | 中国十七冶集团有限公司 | A kind of rotary kiln kiln body assembling alignment device and construction method |
| CN111084140A (en) * | 2019-12-25 | 2020-05-01 | 海阳中集来福士海洋工程有限公司 | Single point mooring turret cylinder and construction method thereof |
| CN213969708U (en) * | 2020-11-17 | 2021-08-17 | 四川航空工业川西机器有限责任公司 | Support device for eliminating gap between reinforcing rib plate and barrel |
-
2021
- 2021-10-26 CN CN202111245058.9A patent/CN113977124A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004076032A (en) * | 2002-08-12 | 2004-03-11 | Nippon Steel Corp | Protecting liner for ore receiving hardware in blast furnace |
| CN103801921A (en) * | 2012-11-14 | 2014-05-21 | 五冶集团上海有限公司 | Kiln shell mounting method for vertical shaft kiln |
| CN109317847A (en) * | 2018-10-24 | 2019-02-12 | 中国十七冶集团有限公司 | A kind of rotary kiln kiln body assembling alignment device and construction method |
| CN111084140A (en) * | 2019-12-25 | 2020-05-01 | 海阳中集来福士海洋工程有限公司 | Single point mooring turret cylinder and construction method thereof |
| CN213969708U (en) * | 2020-11-17 | 2021-08-17 | 四川航空工业川西机器有限责任公司 | Support device for eliminating gap between reinforcing rib plate and barrel |
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